SAN FRANCISCO — Environmental group Stand.earth celebrates today’s announcement by Levi, Strauss & Co to reduce 40% of greenhouse gas emissions in its supply chain by 2025, and applauds the denim giant for setting a new standard on climate commitments in the apparel industry.

The global shipping industry has cruised under the radar for decades. Ships come and go, delivering the products of everyday life. The cruise ship sector of this global shipping industry is growing, though not as much as the industry would like. Meanwhile, the number of ocean-going ships increased fourfold between 1992 and 2012 — getting simultaneously noisier, bigger, and difficult to slow down.